Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Comparison of Surface and Subsurface Fracture Patterns in the Front of Zagros Folding Belt, Ahwaz Anticline, Iran

Document Type : Original Research Paper

Authors
Ali Arzani 1
Ahmad Alavi 1
Khosro Haidari 2
1 Geology Department, Faculty of Earth Sciences, Shahid Beheshti University, Tehran, Iran
2 National Iranian South Oil Company, Geology Department, Ahwaz, Iran
Abstract
Ahwaz anticline in the front of Zagros folding belt has created one of the giant oil fields of Iran with a production rate of 10 times more than the average world production rate. Due to the importance of fracture density and direction in the carbonate reservoirs, a research project with the support of National Iranian South Oil Company (NISOC) was fulfilled in 2 years. The main objective of this project was the comprehensive structural study and its final goal was application of all available data for comparison of fracture density and direction patterns in surface and subsurface horizons. For certainty, various methods were applied that most of them were initiative. One of the basic methods was axis transmission technique and in addition subsurface data of SVSL seismic profiles and FMS/FMI logs data were compared. Final results of this comparison lead surface and subsurface fractures in Ahwaz anticline have 90% agreement in direction and 75% in density.
Keywords
Fractures
Arial Photos
FMI-FMS
S.V.S.L
Axis Transmission
Oil Field
Ahwaz
Iran

Subjects

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Scientific Quarterly Journal of Geosciences
Volume 16, Issue 61
Autumn 2006, Vol. 16, No.61
Autumn 2006
Pages 28-39